Circulator-heater



H. E. BOYS.

CIRCULATOR HEATER.

APPLICATION FILED NOV.15, 1919.

Patented Aug. 23, 1921.

2 SHEETSSHEET 1.

INVENTOR MAME H. E. BOYS.

CIRCULATOR HEATER.

APPLICATION FILED NOV. 15, 1919.

1,388,822, Patented Aug. 23, 1921.

2 SHEETS-SHEET 2.

INVENTOR C UNITED STATES PATENT OFFICE.

HERMAN E. RO'YS, OF NEW YORK, N. Y.,

A S SIGNOR, BY MESNE ASSIGNMENTS, TO

UNIVERSAL INTERESTS, INCL, OF NEW YORK, N; Y., A CORPORATION OF DELA- WARE.

CIRCULATOR-HEATER.

v Application filed. November for example, as an .electric fan of the usual type. The object of my invention 1s to pro-' duce a heater of this type which is ofirrlproved construction and -more convenient in attachment and operation.

It is.likely that this heater will be used most widely in connection wlth standard electric fansand for that reason I have chosen for illustration that embodiment of my heater which is particularly desrgnedfor use with these fans. In. t he drawings accompanying this specification and -form1ng a part thereof:

Figure 1 represents a front 'elevat1on of my heater as applied to an electric'fan with certain parts of the heater broken away to more clearly illustrate the relat1onsh1p of the parts, 1

Fig. 2 represents a top View of the device shown in Fig. 1 showing the fan in eleva tion and the heater in section along the line 22 of Fig.1, I

Fig. 3 is a detail section of the heater along the line 3-3 of Fig.1,

Fig. 4 is a detailillustratingthe means employed for attaching the heater to the fan 1 Fig. 5 is a 'detail showing the construction of the heating unit proper, while Fig. 6 is a diagrammatic illustration of a fan and heater circuit which I find advantageous.

The ,fan which'I have selected for purpose of illustration may consist of the base 11, motor 12', and gu'ar 13 supported from the motor'by braces 14. and provided with a front rim 15 and a plurality ofgenerally radial rods 16secured at their ends to an inner ring 17. This fan is provided with the usual lead wires 19 terminat ing in an attachment plug 18 of any desired generally Specification of Letters Patent. PatentedAug. 23, 1921.

15, 1919.. Serial No. 338,372.

type andmay be provided with the cus tomary starting and controlling switch.

The embodiment of my heater selected for illustration herein may comprise a frame 2l'formed of a single lece of sheet metal stamped into shape. This frame may-comprise an inner ring 22, an outer ring 23, a raised portion 24, an inclined portion 25 connecting the rim 22 and the raised portion 24, andan inclined portion 26 connecting the ring 23 and raised portion 24. The

raised portion 24 may be apertured asat 27 to. permit passage of air therethrough and is preferably crowned as clearly, illustrated .in Fig. 3 to provide for expansion of the frame upon heating. The inclined portions 25 and 26 serve to direct the air. ontothe hea ing elements.

The heating unit proper is mounted withthe heating elements 36. Each heating element 36 may consist of a'core 35 encircled just within'the rings-31' and 32 by insulating washers 38 and between these washers by the heating or resistance wire 39 formed as a coil surrounding the core 35 andextending between the two insulating washers 38. The various coils 39 may be connected in any suitable way, as in series, as shown.

The cores 35 are preferably beveled at each end as shown'at 40 on an angle corresponding to the inclination of the inclined portions 25 and 26 of the frame 21 so that after the heating unit is in assembled position rotation of theheating elements is prevented by the engagement of the beveled ends 40 of the cores 35 against the inclined surfaces 25 and 26 of the frame 21.

I find it convenient to assemble my heating unit by first assembling the inner ring 31, then inserting the various heating'elements into the apertures of this ring to -pro-' ject radially therefrom, then folding the incompleted' outer ring aboutthe heating elements to gradually cause it to assume the assembledposition with the elements ex-- v 0 1n the.pocket formed by the ralsedjportion' tending through the apertures thereof, and then securing the two ends of this outer ring in assembled position. The ends of the rings may be secured together in any suitable manner such as by means of the bolts 41.

The heating unit is preferably secured to the frame by means of a plurality of ma- I chine screws 42 passing through holes in the inclined portions 25 and 26 of the frame 21 and then preferably through spacers 43 to finally engage the inner and outer rings 31 and 32.

I have herein illustrated a device for securing my heater to a support, and particularly to an electric fan, which isdisclosed in detail in Fig. 4. According to this arrangement the outer rim 23 of the heater is provided with a multiplicity of apertures 44 and through certain of these apertures extend the rods 45 bent as disclosed in Fig. 4 to consist of hook portions 46 lying in front of and against the rim 23, loop portions 47 lying in the rear ofthe plate 23 and embracing the supports such as the front rods 16 of a fan guard, and, threaded terminals 48 extending-through other apertures 44 in the plate 23 to the forward side thereof where they are engaged by suitable nuts 49 by which the terminals 48 are drawn through .the rim 23 to tighten the loops 47 against the supports.

In operating my heater in connection with an electric fan I find it extremely desirable to run the fan at a materially reduced speed so as to receive from the fan a slow current of hot air rather than a strong blast of but slightly warm air. I also find that it is desirable to so arrange my heater that the change necessary to reduce the fan speed may be made by any one having no skill in electricity. To accomplish this I prefer toprovide my heater with a socket 50 of the usual type to receive the fan plug 18 and to also provide the heater with an attachment cord 51 provided at its end with the plug 52 of the usual type arranged. to engage in any suitable ,recep' tacle 53 connected to a source of power. I have shown the circuits resulting from this arrangement in diagram in Fig. 6 wherein are illustrated the heating wire39 connected to the plug 52 by the leads 51 and the plug 18 connected to the fan motor 12 by the leads 17. The plug 18 is shown in position in the socket 50 and the socket is connected by the lead 54 to one of the leads 51 and by means of the lead 55 to an intermediate point 56 of the resistance or heating element 39. Inasmuch as the heatting current is relatively large compared; with the fan current the current for the fan may be neglected in considering the current passing through the heating element 39 and it then becomes apparent at once that the ratio of the fan voltage to the total voltage depends upon the relation of the portion of reac es the heater 39 ahead of the point 56 to the entire heater. In Fig. 6 I have shown the point 56 disposed substantially midway of the heating element 39 and in practice I find. that this location of the point 56 provides a very desirable fan speed.

The embodiment of my'heater shown in this specification is selected for purposes of illustration only and is not to be taken as a measure of my invention. There are uses for my heater and advantages therein other than those which have been specifically pointed out and there are embodiments and modifications other than those herein illustrated. These uses, advantages, embodiments, and modifications are all embraced in my invention, especially as they may be included in the appended claims.

I claim:

1. An electric heater for use with an electric fan comprising a heating unit and means for securing said unit to said fan,said meansbeing constructed to cooperate with a fan of any size within a given range.

2. An electric heater for use with an electric fan comprising-a heating unit and means for securing said unit to said fan guard, said means being constructed to cooperate with a fan of any size within a. given range.

3. An electric heater for use with an elec tric fan comprising a. heating unit and quick detachable means for securing said unit to said fan, said quick detachable means being constructed to coiiperate with a fan of any size within a given range.

4. An electric heater for use with an electric fan comprising a heating unit and means for positively securing said unit to said fan, said. means being constructed to cooperate with a fan of any size within a given range.

5. An electric heater for use with an electric fan comprisin a heating unit and quick detachable means for positively securing said unit to said fan, said quick detachable means being constructed to cooperate with a fan of any size within a given range.

6. An electric heater for use with an electric fan comprising a heating unit and quick detachable means for positively securing said unit to said fan guard, said quick detachable means being constructed to cooperate with a fan of any size within a given range.

7. An electric heater for use with an electric fan comprising a heating unit and means for securingsaid unit to'the radial members of the fan guard.

8. An electric heater for use with an electric fan comprising a heating unit and quick detachable means for securing said unit to the radial members of the fan guard.

9. An electricheater for use with an electric fan comprising a heating unit and means for positively securing said unit to the radial members of the fan guard.

, bers.

10. An electric heater for use'with an electric fan comprising. a heating unit and means for securing said unit to the radial members of a fan guard at .any point along said mem- 11. An electric heater for use with an electric fan comprising a heating unit and quick detachable means for, securingsaid unit to the radial members of a fan guard'at any point along said members.

12. An electric heater for use with an electric fan comprising a heating unit and means for positively securing said unit to the radial members of a fan guard at any pointalong 'said members.

13. An electric heater for use with an electric fan comprising a heating unit and quick detachable means for positively securing said unit to the radial members of a fan guard at any point along said members.

, 14. An electric heater comprising a heating unit, a frame supporting said unit, and quick detachable means cooperating with said frame to positively secure the frame to 16. An electric heater for use with an electric fan comprising a heating unit and means for securing said unit to said fan comprising a U-shaped member arranged to embrace a portion of saidfan and to have both ends project through apertures in the frame of said heating unit and having on'eend bentover to hook said member to said frame and the other-end threaded to receive a nut which prevents said second end from being withdrawnfrom said frame.

17. In an electric heater, a heating unit comprising two apertured rings and a plurality of heating elements each having parts projecting through an aperture in each of said rings to thus support said elements from said rings.

18. In an comprising two apertured rings and a plurality of elements each havinga core projecting through an aperture in each of said rings to thus support said elements from, said rings.

19. The device as in claim 17 the ends of said parts being beveled to engage slant surfaces on the frame of said unit to thus prevent rotation of said elements.

20. The device as in claim 18, the ends of said cores being beveled to engage slant surfaceson the frame of said unit to thus prevent rotation of said elements.

electric heater, a heating unit 21. In an electric heater, a heating unit comprising inner and outer rings and a plurality of heating elements supported thereby.

22. In an electric heater, a heating unit comprising inner and'outer rings and a plurality of radial heating elements supported thereby. j

23. In an electric heater, a heating unit comprising apertured inner and outer rings and a plurality of heating elements each having parts projecting through an apexsaid elements from said rings.

24; In anelectric heater, a heating unit comprising apertured inner and outer rings and a plurality of heating elements each having-cores projecting throu gh an aperture in each of said rings to thus support said elements from said rlngs.

25. "Adevice as in claim 23,'the ends of said parts being beveled to engage slant surfaces on the frame of said unit to thus prevent rotation of said elements. 7 j

26. A deviceas in claim 24, the ends of saidscores being beveled to engage 'slant surfaces on the frame of said unit to thus prevent rotation of said elements.

27. In an electric heater, a heating unit comprising an inner ring, an outer ring-, a plurality'of heating elements extending radially between said rings, and means on said elements and said rings to prevent relative lateral motion between said elements and either of said rings.

28. An electric heater comprising a frame having inclined sides and a plurality of heatingelements extending from side to side ture in each of said rings to thus support of said frame and having ends beveled to correspond tothe inclination of said sides.

29. An electric heater comprising an annular heating unit and a deflector extending into the'opening in said'annulus to deflect air from said opening through said annulus.

30. An electric heater comprising a relatively fiat heating unit and a plate for supporting said unit said plate having a crowned and apertured portion within which said unit is located.

31. An electric heater for attachment to an electric fan comprising a heating element, leadsarranged to be connected to a source of power, leads arranged'to supply power to said fan, and means for so connecting said leads and said heater that, while the speeds controlling switch of said fan remains effectiveto alter the speed of said fan, said speeds are all decreased.

32. An electric heater for attachment to an electricfan, comprising a heating element and connections therefrom adapted to be connected to the source of power, a connection from an internal point of said element adapted" to be connected to said fan, and a second connection from said source of power to said fan.

33. An electric heater for attachment to an electric fan comprising a plug arranged to connect said heater to asource of power, a receptacle on said heater arranged to receive the plug on said fan, and connections between saidrreceptacle and said heater circuit. v o

34. An electric heater for attachment to an electric fan comprising a plug arranged to connect said heater to a source of power, a receptacle on said heater arranged to receive the plug on said fan, and connections between said receptacle and said heater circuit so arranged as to reduce the speed of said fan.

' 35. An electric heater for attachment to an electric'fan comprising a plug arranged to connect said heater to a source of power, a receptacle .on said heater arranged to receive the plug onsaid fan, and connections between said receptacle and said heater circuit so arranged that, while operation of the speed control switch on said fan is still effective to vary the fans speed, the fan speeds are all reduced.

36. An electric heater for attachment to ceive the plug on said fan, and connections between said receptacle and said heater circuit arranged to shunt said fan around part of said heater.

37. An electric heater for attachment to an electric fan comprising a plug arranged to connect said heater to a source of power, a receptacle attached to said heater arranged to receive the plug on said fan, and connections between said receptacle and said heater circuit.

In testimony whereof, I have signed my name to this specification this 13th day of November, 1919.

HERMAN E. BOYS. 

